use crate::models::stock_candle::StockCandle;
use sqlx::{Pool, Sqlite};
use anyhow::Result;
use chrono::{DateTime, Utc};

pub struct StockCandleDao {
    pool: Pool<Sqlite>,
}

impl StockCandleDao {
    pub fn new(pool: Pool<Sqlite>) -> Self {
        Self { pool }
    }

    pub async fn insert(&self, candle: &StockCandle) -> Result<()> {
        // 实际实现会在后续完成
        Ok(())
    }

    pub async fn get_latest_by_symbol(&self, symbol: &str) -> Result<Option<StockCandle>> {
        // 实际实现会在后续完成
        Ok(None)
    }

    pub async fn get_by_symbol_and_range(
        &self, 
        symbol: &str, 
        start_time: DateTime<Utc>, 
        end_time: DateTime<Utc>
    ) -> Result<Vec<StockCandle>> {
        // 实际实现会在后续完成
        Ok(vec![])
    }
}